DocumentCode
780902
Title
40 Gbit/s, 16-ary (4 bit/symbol) optical modulation/demodulation scheme
Author
Sekine, K. ; Kikuchi, N. ; Sasaki, S. ; Hayase, S. ; Hasegawa, C. ; Sugawara, T.
Author_Institution
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
Volume
41
Issue
7
fYear
2005
fDate
3/31/2005 12:00:00 AM
Firstpage
430
Lastpage
432
Abstract
A practical 16-ary amplitude-phase-shift-keying (16APSK) optical modulation/demodulation scheme (4 bit/symbol) with a combination of multilevel amplitude and phase modulations is proposed, and its feasibility is successfully demonstrated for the first time. The spectral width of return-to-zero 16APSK signal is only 0.27 nm (33.75 GHz) at 20 dB down, even with 40 Gbit/s modulation.
Keywords
amplitude shift keying; optical modulation; phase shift keying; 40 Gbit/s; amplitude-phase-shift-keying; multilevel amplitude modulation; optical modulation/demodulation; phase modulation; return-to-zero 16APSK;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:20050383
Filename
1421245
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